A cyclist travels along a straight road. The distance-time graph shows her journey.

[Graph shows: straight line from origin to point P, then horizontal line from P to Q, then steeper straight line from Q to R]

Which statement correctly describes the motion between points P and Q?

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Question

A cyclist travels along a straight road. The distance-time graph shows her journey.

[Graph shows: straight line from origin to point P, then horizontal line from P to Q, then steeper straight line from Q to R]

Which statement correctly describes the motion between points P and Q?

Accepted Answer

The cyclist is stationary. — Award 1 mark for recognising that a horizontal line on a distance-time graph indicates zero speed (stationary). A is incorrect — acceleration cannot be determined from a distance-time graph directly, and horizontal means no movement. C is incorrect — constant speed would show a straight line with positive gradient. D is incorrect — deceleration would require the gradient to decrease, not become zero.

Answer

The cyclist is accelerating.

Answer

The cyclist is decelerating.

Answer

The cyclist is moving at constant speed.

Answer

The cyclist is stationary.

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